L hottges



(No Model.) 1

G. HEIDMANN, EJHGTTGES & C. EGEN- BUTTON.

No. 375,629. Patented B60127, 1887'.

NITED. STATES PATENT OFFICE.

GOTTLIEB HEIDMANN, EMIL HGTTGES, AND CARL EGEN, OF BARMEN, PRUSSIA,GERMANY, ASSIGNORS TO HEIDMANN & HOTTGES, OF SAME PLACE.

BUTTON.

SPECIFICATION -forming part of Letters Patent Ne. 375,629, datedDecember 27, 1887.

Serial No. 236.612. (No model.)

T at whom, it may concern:

Be it known that we, GOTTLIEB HEIDMANN, merchant, a subject of the Kingof Prussia,- residing at Barinen, 93 Alleestrasse,Prussia, and

EMILHtSTTGEs, merchant,asub ject ofthe King of Prussia, residing atBarmen, 31 Haspderstrasse, Prussia, andCARL Eenn, machinist, a subjectof the Kingof Prussia, residing at Barmen, Oberdornerstrasse, Prussia,have [0 invented certain new and useful Improvements in Buttons; and wedo hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same, reference being badto the accompanying drawings, and to letters or figures of referencemarked thereon, which form a part of this specification.

Referring to the drawings, which illustrate the several parts of whichour improved button is composed, as well as the several steps in theassembling of the same to the completed button, Figure l is a transversesection of the disk of fabric that constitutes the covering for 2.5 thebutton. Fig. 2 is an under side view of the button priorto its beingcovered. Fig. 3 is a section taken on line 00 0c of Fig. 2. Fig. 4 is aninside view of the cylindrical retaining-cap, by means of which thecovering is secured to 0 the button. Fig. 5 is a section on line y y ofFig. 4. Fig. 6 is a section on line a; x of Fig. 2, showing the coveringfor the button applied and ready to be secured thereto. Fig. 7 is acentral transverse section showing the button complete.

The invention relates to that class of buttons known in the trade ascloth or covered buttons; and it consists in certain improvements,hereinafter fully described, and

set forth in the claims.

In cloth-covered buttons in which the covering is secured in place bybending the edge of the metallic disk that constitutes the button-headover the fabric and over the edge of a concavo-convex or bowl-shapedback-plate the covering is liable to draw out from between said disk andplate, and this occurs more readily when the button is in use and theback-plate becomes more or less loose on the outer disk. To avoid thiswe secure the fabric to the button by means of a toothed retaining-plate independent of the usual backplate. It is also well knownthat in the ordinary mode of securing the fabric to the but ton a moreor less sharp edge is formed, that cuts the covering very rapidly. Thiswe avoid by bending the edges of the metallic disk so as to form anearly cylindrical annular flange around said disk, that not only servesto lock the back-plate securely thereto, but also forms an abutment orshoulder against which bear the teeth of the retaining plate or cap. Ourimproved button is therefore composed of the usual disk of any desiredfabric, h, of a metallic disk, (1, that constitutes the button-head, 6of a cloth-covered pad, (1, of paper or other suitable material thatconstitutes the filling of the button and forms the cloth shank d, of acylindro-conical back-plate, Z), by means of which the pad d is held onthe disk a, and of a cylindro-conical and toothed retaining-plate,

g, for securing the fabric h on the button.

The parts of which the button is made are assembled by means of anysuitable machine, preferably by means of our improved machine 7described in an application for Letters Patent of even date with this,Serial No. 236,673, as follows: The metallic disk in is laid on asmaller disk of any desired fabric on the lower die of the machine,while the pad inserted in the cylindro-conical back-plate b is insertedin the upper die, which latter is so constructed as to bend the edge ofthe disk at over the edge of the flaring or conical portion of theback-plate b, and form a nearly cylindrical flange, a, as shown in Figs.1 and 2, without, however, clamping the edges of the fabric h betweensaid flange and back-plate, as shown in Fig. 6.

It will thus be seen that a button having a rounded edge will resultfrom this operation, 0 which edge is not liable to cut the fabric, andby means of which the back-plate b and pad (1 are securelylocked to themetallic disk a. At the same time a recess, a, is formed in the back ofthe button, the encompassingwall of 5 which forms an abutment for theteeth 9, formed in the cylindrical portion of the cylindro'conicalretaining cap-plate 9. Such a cylindro-conical cap-plate gbeing insertedinto a second upper die of appropriate construe ice tion, said die isforced onto the parts of the button in the lower die, first lapping thefabric over the flange a onto the back-plate b, then forcing the teeth9' through the fabric immediately in rear of the flange, so that thesaid teeth will lie against such flange, and finally bending the upperedge of the cylindrical portion of the back-plate over the correspondingedge of the conical portion of the retainingcap 9, therebylocking allthe parts securely together, as shown in Fig. 7.

It is obvious that however loose the backplate b may work the fabriccannot draw out so long as the edges of the back-plate are held by saidflange.

It is further obvious that the greater the stress exerted by thefabric'in the direction of the arrows, Fig. 7, the more securely will itbe locked to the flange a by pressing the teeth 9 against the shoulder aformed by said flange.

In practice the toothed portion of the cap plateg is of such a diameteras to fit snugly into the recess (1 formed on the back of the button,and the teeth thereof are of a length nearly equal or equal to the depthof said recess.

To give the button a nicer finish and to provide a better hold for theupset edge of the baclcplate I), we prefer to bend the edges of axialopening of the cap-plate g inwardly, as shown at 9 Figs. 5 and 7, toform a rounded edge, over which the outer edge of the backplate I) isbent, as shown at b, Fig. 7.

Having described our invention, what we claim is 1. Inacoveredbutton,thecoinbination,with the covering and the button head or disk having itsedge bent inwardly to form a peripheral flange, over which said coveringlaps, of aretaining cap-plate provided with teeth passing through thecovering, the toothed portion of said cap fitting within the recessformed by and abutting against the inner face of the said annularflange, substantially as described.

2. Inacoveredbutton, thecombination,with the covering and a disk orbutton-head having its edge bent over to form a peripheral flange, andrecess at the back of said disk, over which flange the covering laps, ofacylindroconical open-ended retaining-cap having its cylindrical portionserrated or toothed, said cylindrical toothed portion extending throughthe fabric and fitting within the recess formed by and abutting againstthe inner face of the said annular flange, substantially as andfor thepurpose specified.

3. In a covered button, the combination of the disk or button-head a,having an annular flange, a, the pad (I, the open-ended sleeve b,fabrich, and the cylindro-conical toothed cap said parts being united,substantially as described.

4. The mode of constructing covered buttons, which consists in securingthe pad and its back-plate to a metallic disk by bending the edge of thelatter over the outer edge of the back-plate, so as to form asubstantially cylindrical flange around the button, applying thecovering and lapping the edge thereof over the flange and onto theback-plate, securing the covering by forcing the teeth of the retainingcap-plate through said coveringinside of the peripheral flange, andsecuring the capplate by bending the edge of the axial openinginback-plate over the corresponding edge of the cap-plate, substantiallyas and for the purpose specified.

In testimony whereof we affix our signatures in presence of twowitnesses. I

GOTTLIEB HEIDMANN. EMIL HOTTGES.

CARL EGEN.

\Vitnesses:

GUSTAVE ALBERT OELRrcr-Is, PETER MARX.

